About FHopp.1

FHopp.1 · 2021-02-05

Hello,my STM32 is running with 1.8V and is connected via I2C to another chip. The I2C has an level of 3.5V (connected via pullup to 3.5). I now have communication problems. Is there any limitation for maximum voltage for the high level of I2C on STM3...

FHopp.1 · 2021-02-03

I have an 1.8V STM32 and an 3.5V MAX31865 which are connected via SPI, I used 10k Ohms pullups on data line to 3.5V. Now the problem is that communication dosen't work. When I increas STM32 voltage to 3.5 V everything is fine. Is there an limitation ...

FHopp.1 · 2020-12-16

Hello, I use for STM32 (1.8V VDD) SPI communication with an slave temperature Sensor (3.5V basic voltage, detects high at 0,7*3,5V)SCLK =PC10SDO = PC11SDI= PC12CS = PC13For that reason I want to use an external 3.5V Pullup. But I'm not sure if this ...

FHopp.1 · 2020-06-15

Hi,I'm doing a design with TSV630. VCC+ is 3.5 V and VCC- is GND and GAIN=1. What is the minimum Voltage for the SHDN pin to switch the device on? I couldn't find a formular in datasheet. In Datasheed there are only mentioned the different minimum SH...

FHopp.1 · 2020-05-15

Hello,I have an question concerning the VBUS Pin which is connected to the STM32L476G Discovery (PIN PC11) directly. Why isn't 5V an problem for the PC11 pin? I thougt 5V would cause overvoltage?

FHopp.1 · 2021-02-06

MCU -> STM32L476RGTxPins -> PB8 -> I2C_SCL1 ; PB9 ->I2C_SDA1Pins -> PB10 -> I2C_SCL2 ; PB11 ->I2C_SDA2Yes, I know that these pins are five volt tolerant, and according to data sheet everything should be fine.But maybe I thought there is on some page ...

FHopp.1 · 2021-02-05

Yes, that was the reason. If i set down voltage from 3.5 to 3.0 its working

FHopp.1 · 2021-02-03

OK, thanks. Open drain than should actually be possible?

FHopp.1 · 2021-02-03

I use push-pull configuration.

FHopp.1 · 2021-02-03

No, they are driven as push/pull. Does this cause problems?

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STM32 on 1.8V - I2C with 3.5 PullUp

STM32 with SPI 1.8V connected to 3.5V MAX31865 cuases not working communication

STM32L476RGT which are the 5V tolerant pins? Where can I find these infomation in data sheet?

TSV630 Logic High Level Voltage

STM32L476G Discovery Board VBUS Voltage on PC11

Re: STM32 on 1.8V - I2C with 3.5 PullUp

Re: STM32 with SPI 1.8V connected to 3.5V MAX31865 cuases not working communication

Re: STM32 with SPI 1.8V connected to 3.5V MAX31865 cuases not working communication

Re: STM32 with SPI 1.8V connected to 3.5V MAX31865 cuases not working communication

Re: STM32 with SPI 1.8V connected to 3.5V MAX31865 cuases not working communication